Results 261 to 270 of about 1,986,691 (307)

The Mossbauer spectrum model of Cu-Fe alloys

Journal of Physics F: Metal Physics, 1982
The Mossbauer spectrum model was proposed in order to obtain a better understanding of the iron atom 'states' in a supersaturated Cu-Fe solid solution and their changes during the gamma Fe precipitation process and growth of this phase. The model is related to the atomic structure of this alloy.
T J Panek, J Kansy
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Laser Plasma Spectroscopy of Al-Cu-Fe Quasicrystal and Alloy

Applied Spectroscopy, 2003
Electron number density and temperature were determined from laser-induced plasmas produced by irradiating Al-Cu-Fe targets of a quasicrystal and of an alloy of similar composition. The Al(I) atomic emission spectra of the two systems were measured as a function of the distance from the target and of the time delay after laser irradiation.
Satta M, Zeng X, Mao X, Mao S S, Russo R E, Giardini A, Mele A   +6 more
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Structural and magnetic properties of metastable fcc Cu-Fe alloys

Physical Review B, 1996
The structural properties of the metastable fcc Cu-Fe alloys obtained by high-energy ball milling of elemental powders have been studied by transmission electron microscopy. The same technique has been used to study the effect of thermal annealing on the alloyed samples.
, Mazzone, , Antisari
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Quantum corrections to the conductivity in icosahedral Al-Cu-Fe alloys

Physical Review B, 1992
We report measurements of the temperature and magnetic-field dependence of the resistivity in single-phase icosahcdral Al-Cu-Fe alloys between 0.15 and 41 K and fields up to 8.8 T. The data are consistent with the predictions of weak localization and electron-electron-interaction theories, even though the disorder parameter (k F l e ) -1 is larger ...
, Sahnoune, , Ström-Olsen, , Zaluska
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Local Structure and Stability of Amorphous Cu–Fe–Zr Alloys

Materials Science and Engineering, 1988
The local structure and stability of amorphous Cu60 − xFexZr40 were investigated by Mossbauer effect and differential scanning calorimetry measurements. The isomer shift decreased with increasing iron concentration for x 5. The activation energy of crystallization was 5.5–5.8 eV for x 5.
M. Taniwaki, E. Hatta, M. Maeda
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Density and Surface Tension of Liquid Ternary Ni–Cu–Fe Alloys

International Journal of Thermophysics, 2006
Abstract Density and surface tension of liquid Ni –Cu –Fe alloys have been measured over a wide temperature range, including the undercooled regime. A non-contact technique was used, consisting of an electromagnetic levitator, an optical densitometer, and an oscillating drop tensiometer. At temperatures above and below the
Brillo, J., Egry, Ivan, Matsushita, T.
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Electronic distributions of states in crystalline and quasicrystalline Al-Cu-Fe and Al-Cu-Fe-Cr alloys

Journal of Physics: Condensed Matter, 1992
Valence and conduction state distributions in a series of Al-Cu-Fe and Al-Cu-Fe-Cr alloys of different structural states and nominal compositions have been investigated by means of soft X-ray emission and photoabsorption spectroscopies. A complete description of the valence band is obtained.
E Belin, Z Dankhazi, A Sadoc, Y Calvayrac, T Klein, J -M Dubois   +5 more
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Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system

Zeitschrift für Metallkunde, 2003
Abstract The microstructures of as-cast and slowly solidified Al– Cu–Fe ternary alloys in the vicinity of the icosahedral phase region have been investigated using light microscopy and scanning electron microscopy. The chemical composition of the different phases present has been determined by energy-dispersive X-ray spectroscopy with a ...
Zhang, L., Lück, R.
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Study of mechanically alloyed nano Cu-Fe particles with a heterostructure

physica status solidi (a), 2004
The magnetic alloys of Cu-Fe (Cu 50 Fe 50 , Cu 80 Fe 20 and Cu 90 Fe 10 ) were prepared by a mechanical alloying method and their structural and magnetic behaviors were examined by X-ray diffraction and Mossbauer spectra. The magnetization curves did not distinctly show the saturation at 70 kOe for the concentrated alloys of Cu 80 Fe 20 and Cu 90 Fe ...
Y.R. Uhm, H.M. Lee, C.K. Rhee
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Activity of Arsenic in Liquid Cu–Fe Base Alloys

Monatshefte für Chemie - Chemical Monthly, 2005
The activity of arsenic in liquid Cu–Fe base alloys was determined by isopiestic and Knudsen cell-mass spectrometer methods. Based on the activity data, the volatilization of arsenic in the extraction and recycling of copper was thermodynamically evaluated.
Kimio Itagaki, Dexter G. Mendoza, Leandro Voisin, Mitsuhisa Hino   +3 more
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